To find the molarity of a solution when given the mass of NaCl, first convert the mass to moles using the molar mass of NaCl, and then divide by the volume of the solution in liters. 0.5 grams of NaCl in 0.05 liters gives a molarity of 0.171 M, which is different from a solution with 0.5 moles of NaCl in the same volume, which would yield a molarity of 10 M. ;
Dissolving 0.5 grams of NaCl in 0.05 liters of solution results in a molarity of 0.171 M. In contrast, dissolving 0.5 moles of NaCl in the same volume results in a much higher molarity of 10 M. Therefore, these two scenarios yield different molarities.
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